Authors: R. Suresh, M. Anitha
Abstract: Harmonics in power systems, generated by nonlinear loads and switching devices, can lead to equipment overheating, increased losses, voltage distortion, and resonance phenomena. Accurate modeling and analysis of harmonics are essential for system design, operation, and mitigation strategies. This paper explores the use of circuit models for harmonic analysis in electrical power systems, including modeling techniques, frequency-domain analysis, and mitigation approaches. The paper discusses the application of linearized network models, frequency-sweep simulations, and power quality indices. Tables and two-dimensional figures illustrate harmonic spectra, voltage distortion, and system impedance characteristics. The insights provided are intended for researchers, engineers, and students focused on power system analysis and design.
Keywords: Harmonics, power systems, circuit models, nonlinear loads, voltage distortion, harmonic mitigation
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